Home / 30,705.32-42,370.14-17,275.43

Finding the Fourth Proportional to 30,705.32, 42,370.14 and 17,275.43

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Solution

The fourth proportional to 30,705.32, 42,370.14 and 17,275.43 is: 23,838.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,705.32 : 42,370.14 = 17,275.43 : x
  2. Step 2: Convert to fraction form
    30,705.32/42,370.14 = 17,275.43/x
  3. Step 3: Cross multiply
    30,705.32x = 42,370.14 × 17,275.43
  4. Step 4: Simplify right side
    30,705.32x = 731,962,387.66
  5. Step 5: Solve for x
    x = 731,962,387.66/30,705.32
  6. Step 6: Final answer
    x = 23,838.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.